class.tx_em_import_mirrorlistimporter.php

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<?php
/***************************************************************
 *  Copyright notice
 *
 *  (c) 2010 Marcus Krause <marcus#exp2010@t3sec.info>
 *         Steffen Kamper <info@sk-typo3.de>
 *  All rights reserved
 *
 *  This script is part of the TYPO3 project. The TYPO3 project is
 *  free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  The GNU General Public License can be found at
 *  http://www.gnu.org/copyleft/gpl.html.
 *
 *  This script is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  This copyright notice MUST APPEAR in all copies of the script!
 ***************************************************************/
/**
 * class.tx_em_import_mirrorlistimporter.php
 *
 * Module: Extension manager - Mirror list importer
 *
 * $Id: class.tx_em_import_mirrorlistimporter.php 1982 2010-03-09 06:29:55Z mkrause $
 *
 * @author  Marcus Krause <marcus#exp2010@t3sec.info>
 * @author  Steffen Kamper <info@sk-typo3.de>
 */


/**
 * Importer object for mirror list.
 *
 * @author    Marcus Krause <marcus#exp2010@t3sec.info>
 * @author    Steffen Kamper <info@sk-typo3.de>
 *
 * @since      2010-02-10
 * @package  TYPO3
 * @subpackage  EM
 */
class tx_em_Import_MirrorListImporter implements SplObserver {

    /**
     * Keeps instance of a XML parser.
     *
     * @var  tx_em_Parser_MirrorXmlAbstractParser
     */
    protected $parser;

    /**
     * Keeps mirrors' details.
     *
     * @var  array
     */
    protected $arrTmpMirrors = array();


    /**
     * Class constructor.
     *
     * Method retrieves and initializes extension XML parser instance.
     *
     * @access  public
     * @return  void
     * @throws  tx_em_XmlException in case no valid parser instance is available
     */
    function __construct() {
            // TODO catch parser exception
        $this->parser = tx_em_Parser_XmlParserFactory::getParserInstance('mirror');
        if (is_object($this->parser)) {
            $this->parser->attach($this);
        } else {
            throw new tx_em_XmlException(get_class($this) . ': ' . 'No XML parser available.');
        }
    }

    /**
     * Method collects mirrors' details and returns instance of em_repository_mirrors
     * with retrieved details.
     *
     * @access  public
     * @param   string  $localMirrorListFile  bsolute path to (gzipped) local mirror list xml file
     * @return  em_repository_mirrors
     */
    public function getMirrors($localMirrorListFile) {
        $zlibStream = 'compress.zlib://';

        $this->parser->parseXML($zlibStream . $localMirrorListFile);
        $objRepositoryMirrors = t3lib_div::makeInstance('tx_em_Repository_Mirrors');
        $objRepositoryMirrors->setMirrors($this->arrTmpMirrors);
        $this->arrTmpMirrors = array();
        return $objRepositoryMirrors;
    }

    /**
     * Method receives an update from a subject.
     *
     * @access  public
     * @param   SplSubject  $subject  a subject notifying this observer
     * @return  void
     */
    public function update(SplSubject $subject) {
        // TODO mirrorxml_abstract_parser
        if (is_subclass_of($subject, 'tx_em_Parser_XmlAbstractParser')) {
            $this->arrTmpMirrors[] = $subject->getAll();
        }
    }
}

if (defined('TYPO3_MODE') && isset($GLOBALS['TYPO3_CONF_VARS'][TYPO3_MODE]['XCLASS']['typo3/sysext/em/classes/import/class.tx_em_import_mirrorlistimporter.php'])) {
    include_once($GLOBALS['TYPO3_CONF_VARS'][TYPO3_MODE]['XCLASS']['typo3/sysext/em/classes/import/class.tx_em_import_mirrorlistimporter.php']);
}

?>